Lead-pencil.



No. 645,356. Patented Mar. I3, I900.

A. B. FOSTER.

LEAD PENCIL.

(Application filed July 27, 1899.)

(No Model.)

UNITED STATES PATENT OFFICE.

ALDRED B. FOSTER, OF OAKLAND, CALIFORNIA.

LEAD-PENCIL.

SPECIFICATION forming part of Letters Patent No. 645,356, dated March 13, 1900.

Application filed July 27, 1899. Serial No. 725,291. (No model.)

To all whom it may concern.-

Be it known that I, ALDRED B. FOSTER, a

' citizen of the United States, and a resident of Oakland, county of Alameda, and State of Oalifornia,have invented certain new and use ful Improvements in Lead-Pencils, of which the following is a specification, reference being had to the accompanying drawings, form ing.a part thereof, in which similar letters of reference indicate corresponding parts.

This invention relates to lead-pencils; and it has for its object to provide a simple and inexpensive pencil in which the lead can be readily fed or adjusted.

The invention will be'hereinafter fully described, and specifically set forth in the annexed claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a side view of a pencil embodying my improvements. Fig. 2 is a detail sectional view of the end of the pencil. Fig. 3 is a detail perspective View illustrating the clamping device for the lead. Fig. 4 is a detail cross-section on the line w a: of Fig. 1, and Fig. 5 is a detail cross-section on the line y y of Fig. 1.

Referring to the drawings, A designates the body or stem of the pencil, which may be of cylindrical form, with a pointed end a. Said stem is provided with a central longitudinal bore 1), extending through the same from end to end and intersected by a series of slots 0, extending through the wall of the stem or body of the pencil on a longitudinal plane,

said slots being preferably arranged at divers points with respect to the exterior surface of the stem for purposes of strength and preferably having their ends overlapping, as shown in Fig. 1.

Within the bore 1), near thelower or pointed end a of the pencil, is providedla recess or enlargement d, in which is set a clamp E for retaining the lead F against backward movement. This clamp is preferably formed by a body-plate having an eye or opening for the passage of the lead, as at g, from which bodyplate at opposite sides extend downwardly-.

projecting and inwardly-convergent fingers 71., having segmental recesses 2' in their lower ends, which respectively embrace the lead at opposite sides.

The operation and advantages of my invention will be readily understood. The lead core F may be fed downwardly within the stem or body of the pencil to project its point bein shown and described, as it is obvious that under the scope of my invention Iam entitled to structural variations.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An improved lead-pencil of the class described, comprising a stem or body having a longitudinal bore adapted to contain a lead core, and intersected by slots extending through the Walls of the stem and arranged on a longitudinal plane, in combination with clamping devices adapted to engage the lead core and prevent backward movement of the same, substantially as and for the purpose set forth.

2. Animproved lead-pencil of the class described, comprising a stem or body having a longitudinal bore adapted to contain a lead core, and intersected by slots extending through the walls of the stem and arranged on a longitudinal plane, in combination with a clamping device contained within the bore of the pencil and adapted to bear against the lead core, substantially as and for the purpose set forth.

3. An improved lead-pencil of the class described, comprising a stem or body having a longitudinal bore adapted to contain a lead core and intersected by the slots extending through the walls of the stem and arranged on a longitudinal plane, said bore having an enlargement forming an interior recess in the stem, in combination with a clamping device formed by plates seated in said recess and having downwardly-projecting inwardly-convergent spring-arms adapted to embrace the lead core, substantially as and for the pur pose set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 11th day of July, 1899.

ALDRED B. FOSTER.

Witnesses:

H. O. CANTWELL, O. E. PERIYO. 

